The Oldest National Distributor of Fireplace, Wood and Gas Heating Products

SS Vacu Stack (2 & 3 Wall Air Co

The TDW Vacu-Stack Is The Best Solution For Wind Induced Downdraft.
Stops wind from blowing into the chimney.
Prevents “wind induced downdraft” regardless of wind direction (even downward.) Accelerated air flow around the Vacu-Stack creates a venturi, causing flue gasses to flow up and out of the chimney.

Note: For Air-Cooled Double and Triple Walled Chimneys. These models feature separate passages for cooling air to flow uninterrupted through convection cooled chimneys.